Coupling device



NOV. 26, 1929. RABB 1,737,481

COUPLING DEVICE Filed June 3, 1939 fi l-I WITNESSES INVENTOR j g mc/wez RaZZ wk v ATTORNEYS is define the actual scope ofthe same.

' ing the ends of necklaces,

"is coupled thereby -Patente d- Nov. 26,. 1929 MICHAEL BABE, 01E .NAE/K,

NETV JERSEY courtrne nnvrcie Application filed. June a,

This invention relates to coupling devices for articles of jewelry, and has particular reference to an improved device for connectlocket chains or in other capacities-where the usual spring ring is generally employed.

The spring ring is open to many objections, notably, the tendency of the spring to weaken or break due to the small size and fragility, thereby releasing the movable section of the ring. The tubular formation of the ring also makes for a weak structure which is readily distorted and permits of the disconnection of the ends of the article which when subjected to the slightest stresses or strains.

To overcome the above and other objections and disadvantages, the present invention comprehends a coupling device which I to the other while eliminating the use of a spring, serves to effectually connect the articles withwhich it is associated.

More specifically, the invention contemplates a coupling device of the character set forth, which includes a pair of notched elements connected together for relative movements in opposite directions, the notched portions cooperating to receive and completely embrace an article to be coupled upon movement thereof to one relative position, and serving upon movement to another relative position to release the same. The invention further provides a fastening device embodying a pairof rotatably connected notched discs,'one of which being provided with a radially extending part which serves the double function of rotating one disc relative and as a friction latch which serves to hold the discs in closed position.

Other objects reside in the comparative simplicity and strength of construction of the device, the economy with which it may be produced, and the general efficiency derived therefrom. V

With the above recited and otherobjects' in view, reference is had to the following description and accompanying drawings, in which there is exhibited one example or embodiment of the invention, while the claims 7192s.. Serial No. saacve.

In the drawings; Figure l is a view in coupled position.

Figure 2 is a similar view of the same in released position.

Figure taken. approximately on the line S of Figure 1. Figure 4- is a. collective perspective view of the parts of the device in separated relation. 7

Referring to the drawings by characters of ref rence, 5 and 6 designate respectively a pair of relatively shiftable or movable elements whichare illustrated specifically as a pair of discs of approximately the same-diameter. A rivet extends concentrically through the discs 5 and'61 and connects the same for relative turning movement. The disc 5 is provided with a peripheral notch 8 of the coupling device The teat or lever 9 extends at an angle and overlies the. periphery of the disc 6'. The other disc 6. is provided with a concentric arcuate slot 10', one end 11 of which extends radially outwardthrough the periphery of the disc. and. defines a. curvedv or arcuate finger 12 concentric tothe path of movement of the notch 8.; The closed endv of the slot is disposed at a. point substantially diametricaliyopposite an apertured radially projecting, 18. formed on the disc 6. When the disk 5 is rotated to the position disclosed in. Fig. 1 the teat or lever 9 frictionally engages the arcuate finger 12. two. disks are. frictionally held. against rctation. Moreover the lever 13. as disclosed in Fig. 2 when rotated to open position. This insures reg1strationof the slot .11 andthe-notch Swhen it is desired'to engage the link 1a of the chain 15 therewith. From the description it will be manifest that the part9 serves three functions; first, as a lever for actuating the disk 5 second, as a friction. latch. with the arcuate finger 12; and third, asa stop for g iting the rotation of the disc 5 in one direction. In. use and: operation, with the-elements 5 3 is a transverse sectional view' and radially projecting teat or lever 9,

Thus the 9 abutsthe lug the disk 5 is 1 for engagement engagement withv the lug 13 in lim 11 0f th apertured lug 13 may j against relative the end link ally engage such edge to relative rotation when the last mentioned disc isrotated to bring the notch and slot out of the chain or necklace 15 against relative turning of the discs prevents accidental disengagement of the link from its coupled relation Withthe device. In practice, where the device is employed for connecting the ends of a chain or necklace, one end thereof is permanently attached to the apertured lug 13 as illustrated. lVhen it is desired to disengage the link 14 from the device, the tip of the-finger may be engaged with the teat 9 for turning the disc 5 in a direction to dispose the notch 8 in registry with the end e arcuate slot 10, or,

be grasped and firmly held while a pull isexerted onthe link 14 in the proper direction to accomplish this result. Under the construction and arrangement described, it is apparent vice has been devised which serves for all the purposes of the usualfspring ring while ellminating the'many weaknesses and disadvantages of the same;

What is claimed is:

1. Ina coupling device, a pair of discs conhavinga peripheral notch adapted to register i tlng'finger piece beadapted .to frictionally engage the same and thereby hold both discs rotation when the last imenlimit if desired, the 7 that a coupling dethe other in one direction,

, 1,737,481 r V j if; f j

tion, one of the Vdiscs'having' an arcuate' concentric slot open atone end and the other hav 7 7 ing aperipheral notch'adapted to'register.

with the open end of the slot when one disc is rotated relative to the other in one direc- @tion, and an angularly disposed finger piece g projecting from the edge of the last mentioned disc and overlying the edge ofthe first mentioned disciand adapted to frictionally' V engage such edge to hold the disc against relative rotation when the last mentioned disc is rotated to bring the notch and slot out of registration, and a lug projecting laterally 1 disc at a point dlafrom the first mentioned metrically opposite the inner end of the slot and constituting. an abutment to be engaged by the angularly disposed finger piece to in a direction tobring registration.

the rotation of the last mentioned disc the notch and slot in MICHAEL RABB.

tloned disc is rotated to dispose the notch and slotout of registration. i

2. In acoupling device,

a pair of discs connected V endand the other. having a peripheral notchadapted to regis terwith the openendof the'slot when onedisc is rotated relative to the other in one di rection, and an angularly disposed finger piece projecting from the edge of the last mentioned disc and overlying the'edge of'the firstmentioned disc and adapted to frictiontogether tor concentric relative rota hold the disc against Y 

